Greener Living

Here’s How a Heat Pump Can Cool Your House in the Summer

This energy-efficient device not only can heat your home in the winter, it can cool you down on hot days — while saving you money.

llustration: Felix Decombat for Bloomberg Green
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As temperatures and energy bills spike this summer, it might be time to consider installing a heat pump. Despite its name, a heat pump cools your home as well as warming it in winter, but the device is far more efficient than a conventional air conditioner and fossil fuel furnace.

The most commonly installed are air-source heat pumps, which resemble air conditioner units that sit outside your house. During hot months, liquid refrigerant in a copper coil extracts heat from the interior of a home as warm air naturally moves toward the cold. The hot air is then vented outside the house. A heat pump in cooling mode also lowers the humidity in a house, creating a more comfortable environment.